Roving stop-motion for spinning-machines.



No. 629,495. F. S. OULVER.

BOVINE STOP MOTION FOR SPINNING MACHINES.

(Application filed May 4, 1899.)

(No Model.)

Patented July 25, I899.

WITNEEEEE. 644.7%, m% 05 77M UNITED STATES PATENT OFFIC ROVING STOP-MOTION FOR SPINNING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 629,495, dated July 25, 1899.

Application filed May 4, 1899. Serial No. 715,503. (No model.)

To all whom it may concern:

Be it known that I, FREDERICK SLooUM CULVER, of Tauntou, in the county of Bristol and State of Massachusetts, have in vented a new and useful Improvement in Roving Stop-Motions for Spinhing-lldachinesi and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification This invention has reference toan improvement in devices for stopping the delivery of roving to the drawing-rolls of spinning-machines when the roving breaks.

The object of the invention is to arrest the delivery of the-roving and hold the broken end in close proximity to the back rolls, so that on the release of the roving by the attendant the roving will pass through the drawing-rolls.

In spinning-machines the roving passes from the spool, usually through a guide-eye, to the drawing-rolls,where it is drawn,out and thence extends through a guide-eye to the spinning-spindle. The rovingis held against the drawing-rolls by the top rolls, usually covered with leather, and to prevent the 10- cal wearing of the drawing-rolls and top rolls the roving is usually passed through trumpets secured to a rod which is automatically traversed longitudinally, so as to continually change the path of the roving through the drawing-rolls. When the roving breaks, it ceases to make yarn, and unless it is arrested will be turned into waste. To secure the prompt arresting of the roving, the holding device, by which the roving is to be clamped, must cooperate with the trumpet on the traverse-rod close to the back rolls, and the clamping device must be so accurately adjusted that on the stopping of the spinningmachine or when the sliver or roving extending from the front rolls to the spindle is slack the device will not act to clamp the roving, but will promptly act when the roving breaks. To secure this accurate adjustment, I connect myimproved stop-motion directly to the traverse-rod and provide the front end of the arm with a bracket, so that while the roving stop-motion moves with the traverse-rod the roving or sliver is delivered through the usual guide-eye over the center of the spindle.

The invention consists in the peculiar and novel construction of the roving stop-motion whereby the relative position between the actuatiugarm, the clamping device, and the roving is always maintained.

Figure l is a transverse sectional view of the front of one side of a spinning-machine, showing the stop-motion in the normal position in solid lines and in the position occupied by the same when arresting the delivery of the roving in broken lines. Fig. 2 is a top view of the actuating-arm of the roving stopport for the actuating-arm, showing the adjustable stops. Fig.6 is a view of the under side of the bracket, showing the actuatingarm pivotally supported in the same.

In the drawings, ct indicates thefront beam of the spinning-machine, a the finger-board,

and a the ,pigtail forming the stationary guide-eye; b, the drawing-roll stand; I) b, the drawing-rolls; b the back roll; 19 b the top rolls; b the traverse-rod. The trumpet and it has the plate 0 which is provided with a slotted hole, andthe curved bracket 0 provid ed at its lower end with thebifurcated supv ports 0 0 all formed in one piece. The rod 0 is secured in'the supports 0 c by means of the clamp-screw c. The actuating-arm (1, usually formed of a piece of bent-up wire, has on its front end the bracket d and is secured to the journal-block d by the clampscrew d The journal-block d is journaled on the rod c and moveswithin the bifurcated support 0 of the bracket 0 The rear end of the actuating=arm d is provided with the hinge-bloek dfladj ustably secured by a clamp screw to the actuating-arm. The clampingarm 0 has the rearwardly-extendinglever 0 formed in one piece with the arm 0', and the end of the lever c is connected with the hingeblock d 'by the rod d pivotally secured at the opposite ends.

It is important in a roving stop-motion to control the movement of the clamping-arm a, so that in the normal position the roving will not be frayed or injured and so that the arm will firmly clamp the roving to arrest the delivery when the roving breaks. As the clamping-arm c is operated by the actuatingarm cl, I provide the stop-block e, secure it to the rod 0 by the clamp-screw e, and slot the same, so that the stops e" and e will limit the movement of the actuating-arm d in the slot by partially rotating the stop-block e. The stops e and e may be adjusted and the operation of the clamping-arm 0' controlled.

By the use of my improved roving stop'motion the sliver extending from the front rolls to the spindle is guided in the usual manner by the pigtail a permanently located vertically over the axial center of the rotating spindle. The bracket (1 bears against the sliver, which holds the actuating-arm d in the depressed position, and the pivotal support of the actuating-arm is secured to the traverse-rod 12 preferably by a screw extending through the elongated slot on the plate 0 made is permanently maintained, thereby securing the reliable action of the clampingarm c to arrest the delivery of the roving and hold the same, so that when the actuating-arm is depressed the roving will be automatically delivered audmay be readily pieced upwith the sliver or partially-twisted yarn, connected with the bobbin or spindle. This roving stop-motion may be quickly secured to the traverse-rod in the manner described, and when secured is not liable to be affected by expansion", contraction, or the warping of any part of the spinningmachine.

Having thus described my invention, I claim as new and desire to" secure by Letters Patent 1. In aspinning-machine, the combination with thedrawing-rolls, the pigtails secured to the usual finger-boards, the traverse-rod, and the trumpet on the traverse-rod, of an arm extendingdownwarclly from the trumpet to form. the pivotal support of the actuatingarm, a clamping-arm pivotally supported on the trumpet, a lever extending rearwardly from the clampin g-arm, and an actuating-arm The proper adjustment when once pivotally supported in the bracket extending from the trumpet, the rear end of the actuating-arm beyond the pivotal support connected with the rearWardly-extending lever of the clamping-arm; whereby the stop-motion is supported by and moves with the traverse-rod and the adjustment of the parts is maintained, as described.

2. In a spinning-machine, the combination with the finger-boards and the pigtails on the same, the drawing-rolls and the traverse-rod, of a bracket adapted to be secured to the traverse-rod, a trumpet in the upper part of the bracket, a clamping-arm pivotally supported on the trumpet, an actuating-arm having a laterally-extending bracket on the forward end of the arm, a journal-block pivotallysupported by the bracket secured to the-traverserod, a clamp-screw in the journal-block for securing the actuating-arm, and connections between the rear end of the actuating-arm and the lever extending rearwardly from the clamping-arm; whereby the roving stop-motion is made to move with the traverse-rod and the sliver extending from the front rolls to the spindle is supported by the laterallyextending bracket on th'e front end of the-actuating-arm, as described.

3. A roving stop-motion consisting of the bracket 0 having at its upper endthetrumpet a, and the clamping-arm cpivotally connected with the trumpet, means for securing the bracket to the traverse-rod, the bifurcated support 0, the rod 0 the actuating-arm d, the laterally-extendin g bracket cl on the front end of the actuating-arm, the journal-block 01 supported on the rod 0 means for securing the actuating-arm to the journal-block, the stop-block e, and means for adjustably securing the same to the rod' 0 the lever c connectedwith the clamping-arm c, andconnections between the lever and the rear part of theactuating-arm; the Wholeadapted to be secured to the traverse-rod of a spinning-machine, substantially as described.

In W-itnesswhereof I havehereunto set my hand.

FREDERICK SLOOUM GULVER.

Witnesses:

J. A. MILLER, Jr., B. M. SIMMs. 

